Successful Ablation with a Multipolar Mapping Catheter for Swallowing-induced Atrial Tachycardia.

We herein report a case of a 52-year-old woman who presented with a history of recurrent palpitations that occurred during swallowing solid food. On a Holter electrocardiogram, paroxysmal atrial tachycardias (PATs) were detected while eating. We mapped the right atrium (RA) with a multipolar mapping catheter while she swallowed a rice ball and it was revealed that the earliest endocardial breakthrough was on the anterior septal side near the superior vena cava junction of the RA.

Ectopies from the superior vena cava after pulmonary vein isolation in patients with atrial fibrillation.

Episodes of atrial fibrillation (AF) are mainly initiated by triggers from pulmonary veins (PVs). The superior vena cava (SVC) has been identified as a second major substrate of non-PV foci, but the electrophysiologic features of the SVC have not been fully investigated. We hypothesized that SVC ectopies are suppressed by predominant features of PV ectopies and tend to appear after PV isolation (PVI).